Restructure solution layout by module

src/Notify/__Libraries/StellaOps.Notify.Connectors.Slack/SlackChannelHealthProvider.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
+using StellaOps.DependencyInjection;
+using StellaOps.Notify.Engine;
+using StellaOps.Notify.Models;
+
+namespace StellaOps.Notify.Connectors.Slack;
+
+[ServiceBinding(typeof(INotifyChannelHealthProvider), ServiceLifetime.Singleton)]
+public sealed class SlackChannelHealthProvider : INotifyChannelHealthProvider
+{
+    public NotifyChannelType ChannelType => NotifyChannelType.Slack;
+
+    public Task<ChannelHealthResult> CheckAsync(ChannelHealthContext context, CancellationToken cancellationToken)
+    {
+        ArgumentNullException.ThrowIfNull(context);
+        cancellationToken.ThrowIfCancellationRequested();
+
+        var builder = SlackMetadataBuilder.CreateBuilder(context)
+            .Add("slack.channel.enabled", context.Channel.Enabled ? "true" : "false")
+            .Add("slack.validation.targetPresent", HasConfiguredTarget(context.Channel) ? "true" : "false");
+
+        var metadata = builder.Build();
+        var status = ResolveStatus(context.Channel);
+        var message = status switch
+        {
+            ChannelHealthStatus.Healthy => "Slack channel configuration validated.",
+            ChannelHealthStatus.Degraded => "Slack channel is disabled; enable it to resume deliveries.",
+            ChannelHealthStatus.Unhealthy => "Slack channel is missing a configured destination (target).",
+            _ => "Slack channel diagnostics completed."
+        };
+
+        return Task.FromResult(new ChannelHealthResult(status, message, metadata));
+    }
+
+    private static ChannelHealthStatus ResolveStatus(NotifyChannel channel)
+    {
+        if (!HasConfiguredTarget(channel))
+        {
+            return ChannelHealthStatus.Unhealthy;
+        }
+
+        if (!channel.Enabled)
+        {
+            return ChannelHealthStatus.Degraded;
+        }
+
+        return ChannelHealthStatus.Healthy;
+    }
+
+    private static bool HasConfiguredTarget(NotifyChannel channel)
+        => !string.IsNullOrWhiteSpace(channel.Config.Target);
+}